Telit EZ10-GPRS/-PCS
Product Description
80269ST10014a, Rev. 3 – 26/09/05
Reproduction forbidden without written authorization by Telit Communications S.p.A.
Page 24 of 74
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2.9 User Interface
The user interface of the EZ10 Terminal is accessible from a Data Terminal Equipment DTE
connected to the RS232 interface and it is managed by AT commands according to the GSM 07.07
and 07.05 specification and the supported commands of the different versions are listed in the
chapter 4, AT Command Interface
. For a detailed description of the AT Command Interface refer
to the separate GM862 / TRIZIUM Software Description / User Guide documents.
2.9.1 Switching the EZ10 Terminals ON and OFF
Depending on the versions of the
Telit EZ10 wireless modem
, there are generally the following
ways to switch the EZ10 Terminals ON or OFF:
NOTE:
Switching OFF the EZ10 by disconnecting the external power supply line requires to wait
enough time (depending on the HW version!) that the load capacitor of the DC/DC converter inside
the EZ10 discharges so that the GSM862 module inside goes to OFF condition.
2.9.1.1 ON/OFF on
Telit EZ10-GPRS (models with AUDIO interface)
•
The EZ10 Terminal switches on automatically each time the Power Supply is connected the
first time or re-connected.
•
The EZ10 Terminal can be turned OFF and ON by a signal on the REMOTE ON/OFF line
at the AUDIO connector (RJ11). Refer to GM862 Hardware User Guide for details on
circuitry and timing.
•
The EZ10 Terminal can be turned OFF by the command AT#SHDN. For turning it ON
again, the ON signal is required on the ON/OFF line (manually or by external device) or the
Power Supply has to be disconnected and re-connected.
Use of the Programming Jumper: It connects pin2 to GND to create ON / OFF signal. It needs
to be plugged
and unplugged
for that operation.
NOTE: The jumper might be plugged at delivery – remove it to switch the device ON
2.9.1.2 ON/OFF on
Telit EZ10-PCS with PYG Option
•
The EZ10 Terminal switches on automatically each time the Power Supply is connected the
first time or re-connected.
•
The EZ10 Terminal can be turned OFF by the command AT#SHDN, but immediately
thereafter it switches ON again automatically (AUTO POWER ON always enabled).
NOTE: The jumper is not included with the terminal, because there is a GPIO at the place of the
Remote ON/OFF line.